Derived class of interpolator_base to indicate a Bezier curve. Supports Bezier curves of any degree. More...
#include <path.hpp>
Additional Inherited Members | |
 Static Public Member Functions inherited from fastuidraw::reference_counted_base< T, Counter > | |
| static void | add_reference (const reference_counted_base< T, Counter > *p) |
| static void | remove_reference (const reference_counted_base< T, Counter > *p) |
Detailed Description
Derived class of interpolator_base to indicate a Bezier curve. Supports Bezier curves of any degree.
Constructor & Destructor Documentation
◆ bezier() [1/3]
| fastuidraw::PathContour::bezier::bezier | ( | PathContour & | contour, |
| const vec2 & | ct, | ||
| const vec2 & | end, | ||
| enum PathEnums::edge_type_t | tp | ||
| ) |
Ctor. One control point, thus interpolation is a quadratic curve.
- Parameters
-
contour PathContour to which to add the interpolator. The interpolator is added to the contour at the interpolator's construction. The start point is computed from the current state of the PathContour ct control point end end of curve tp nature the edge represented by this interpolator_base
◆ bezier() [2/3]
| fastuidraw::PathContour::bezier::bezier | ( | PathContour & | contour, |
| const vec2 & | ct1, | ||
| const vec2 & | ct2, | ||
| const vec2 & | end, | ||
| enum PathEnums::edge_type_t | tp | ||
| ) |
Ctor. Two control points, thus interpolation is a cubic curve.
- Parameters
-
contour PathContour to which to add the interpolator. The interpolator is added to the contour at the interpolator's construction. The start point is computed from the current state of the PathContour ct1 1st control point ct2 2nd control point end end point of curve tp nature the edge represented by this interpolator_base
◆ bezier() [3/3]
| fastuidraw::PathContour::bezier::bezier | ( | PathContour & | contour, |
| c_array< const vec2 > | control_pts, | ||
| const vec2 & | end, | ||
| enum PathEnums::edge_type_t | tp | ||
| ) |
Ctor. Iterator range defines the control points of the bezier curve.
- Parameters
-
contour PathContour to which to add the interpolator. The interpolator is added to the contour at the interpolator's construction. The start point is computed from the current state of the PathContour control_pts control points of the bezier curve created, can be any size allowing bezier curves of arbitrary degree end end point of curve tp nature the edge represented by this interpolator_base
Member Function Documentation
◆ add_to_builder()
|
virtual |
To be optionally implemented by a derived class to add this interpolator to a ShaderFilledPath::Builder. A return code of routine_fail means that the interpolator cannot be realized in such a way to be added and a Path that includes such an interpolator in a closed contour will be unable to realized a ShaderFilledPath value and Path::shader_filled_path() will return a null handle. Default implementation is to return routine_fail.
- Parameters
-
builder object to which to add interpolator. tol error goal between the interpolator and how it is realized on the ShaderFilledPath::Builder
Reimplemented from fastuidraw::PathContour::interpolator_base.
◆ approximate_bounding_box()
|
virtual |
To be implemented by a derived class to return a fast (and approximate) bounding box for the interpolator.
- Parameters
-
out_bb (output) location to which to write the bounding box value
Implements fastuidraw::PathContour::interpolator_base.
◆ deep_copy()
|
virtual |
To be implemented by a derived class to create and return a deep copy of the interpolator object.
Implements fastuidraw::PathContour::interpolator_base.
◆ is_flat()
|
virtual |
To be implemented by a derived class to return true if the interpolator is flat, i.e. is just a line segment connecting start_pt() to end_pt().
Implements fastuidraw::PathContour::interpolator_base.
◆ minimum_tessellation_recursion()
|
virtual |
To be implemented by a derived class to return a reasonable lower bound on the needed number of times the edge should be cut in half in order to capture its shape.
Implements fastuidraw::PathContour::interpolator_generic.
◆ pts()
Returns the control points of the Bezier curve with c_array<const vec2>::front() having the same value as start_pt() and c_array<const vec2>::back() having the same value as end_pt().
◆ tessellate()
|
virtual |
To be implemented by a derived to assist in recursive tessellation.
- Parameters
-
in_region region to divide in half, a nullptr value indicates that the region is the entire interpolator. out_regionA location to which to write the first half out_regionB location to which to write the second half out_p location to which to write the position of the point on the curve in the middle (with repsect to time) of in_region
Implements fastuidraw::PathContour::interpolator_generic.
The documentation for this class was generated from the following file:
- /home/kevin/fastuidraw.krogueintel/inc/fastuidraw/path.hpp
